tracking down oil leak?
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Senior User
Joined: Mar 2006
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From: yucca valley, CA
tracking down oil leak?
We just bought a large camper we are towing with our 2002 Excursion 7.3 We towed it around 500 miles and noticed oil everywhere when we stopped. There is a pint or so of oil in the valley, and it looks like it slobbered everywhere. I put in some UV dye and ran it for an hour, and it's not even dripping now. Is it possible to only have a leak under load? I was hoping it would be the HPOP fitting, but I have no idea where it is coming from.
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
Since you did drop in dye, my next step would be to simple green and spray the crap out of the engine taking the alt and 42 pin on drivers side valve cover into consideration.
Clean it up surgically and see what you see.
Should be an easy pinpoint.
Denny
(And everything acts like a redheaded stepchild when you strap in a ball to the bumper, or install a goose or 5'r hitch)
Clean it up surgically and see what you see.
Should be an easy pinpoint.
Denny
(And everything acts like a redheaded stepchild when you strap in a ball to the bumper, or install a goose or 5'r hitch)
Thread Starter
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Senior User
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From: yucca valley, CA
I have a love hate relationship with this damn truck, and I am leaning more towards hate right now. We lost around 4 qts of oil, so I figured it shouldn't be too hard to find. Two hours of running around town, cleaned out the valley and flushed the PEE hole, and now it isn't dripping ANYWHERE. WTF?
Last edited by BroncoChuck; Jul 4, 2017 at 05:44 PM. Reason: spelling
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
Strap your load back on ad give it hell. Do it locally and see if it is indeed the load. I've experienced this and make sure your looking at engine oil and not trans fluid.
These guys have a tendency to purge out of the front seal when hot and suck it back up when cooled. (transmission)
If that's the cause after you examine it, upgrade your cooler since you tow.
Other than that?? We wait and we watch.
Better to do the bell ringer close to home.. Try and mimic the time you took the puff.
Denny
These guys have a tendency to purge out of the front seal when hot and suck it back up when cooled. (transmission)
If that's the cause after you examine it, upgrade your cooler since you tow.
Other than that?? We wait and we watch.
Better to do the bell ringer close to home.. Try and mimic the time you took the puff.
Denny
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
I recant, sorry just busy. In the valley..............
Obviously you know where to look but with a clean specimen, you'll no doubt find it.
After you saw the oil trail, how did the dip look when you checked her out?
Obviously you know where to look but with a clean specimen, you'll no doubt find it.
After you saw the oil trail, how did the dip look when you checked her out?
Cargo Master
Joined: Nov 2005
Posts: 2,766
Likes: 56
From: East Tawas, MI
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You will find it/them. It is a 15 year old truck and will have issues come up. Although, it is still better than having a $600+/month payment for 7 years for a new truck.
If you still have some dye left, one of the other FTE guys had great luck with it being put into the HPOP reservoir instead of the oil pan.
If you still have some dye left, one of the other FTE guys had great luck with it being put into the HPOP reservoir instead of the oil pan.
Post Fiend
Joined: Mar 2015
Posts: 5,277
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From: Blairsville, Pennsylvania
I just went through this about a month ago. I took lots of pics and such.
After cleaning out the valley, I put blue shop towels in the middle to split and see if it was front or rear section. It will slosh around otherwise.
I stopped occasionally, climbed up and used flashlight.
Front = HPOP, hoses, fittings, ICP, IPR
Rear = Turbo to pedestal orings, pedestal to engine orings, or EBPV system (piston, oring, solenoid)
If your turbo was blown, you'd know it
So we can probably rule that one out 
Just do a search on my name and you'll see I have a couple of threads, which also show WHERE I was looking and what I found.
A 3" round mirror is a HUGE help
After cleaning out the valley, I put blue shop towels in the middle to split and see if it was front or rear section. It will slosh around otherwise.
I stopped occasionally, climbed up and used flashlight.
Front = HPOP, hoses, fittings, ICP, IPR
Rear = Turbo to pedestal orings, pedestal to engine orings, or EBPV system (piston, oring, solenoid)
If your turbo was blown, you'd know it
So we can probably rule that one out Just do a search on my name and you'll see I have a couple of threads, which also show WHERE I was looking and what I found.
A 3" round mirror is a HUGE help